/*
 *  vlife http://github.com/wwwlike/vlife
 *
 *  Copyright (C)  2018-2022 vlife
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package cn.wwwlike.vlife.bi;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * 报表指标信息补充
 */
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface ItemInfo {
    /**
     * 指标名称中文
     *
     * @return
     */
    String title() default "";

    /**
     * 聚合的字段，默认是id
     *
     * @return
     */
    String field() default "id";

    /**
     * 使用的聚合函数,默认是查询数量 count ,
     *
     * @return
     */
    FunctionEnum func() default FunctionEnum.count;

    /**
     * 配置了子查询的相关配置信息
     */
    Class<? extends AbstractBiCondition> condition() default AbstractBiCondition.class;

}
